"Train as you fight" eq "Don't cut corners when it appears not to matter."
All your "one off" scripts should be well written, commented, indented, use strict, etc. This practice "trains" both your physical and mental "muscle memory" to follow good practices when it does count.

When putting a smiley right before a closing parenthesis, do you:

Use two parentheses: (Like this: :) )
Use one parenthesis: (Like this: :)
Reverse direction of the smiley: (Like this: (: )
Use angle/square brackets instead of parentheses
Use C-style commenting to set the smiley off from the closing parenthesis
Make the smiley a dunce: (:>
I disapprove of emoticons
Other